%!PS

% begin included library code
% see https://codeberg.org/Firedrake/postscript-libraries/
/test.start {
    print (:) print
    /test.pass 0 def
    /test.count 0 def
} bind def

/test {
    /test.count test.count 1 add def
    {
        /test.pass test.pass 1 add def
    } {
        ( ) print
        test.count (....) cvs print
        (-fail) print
    } ifelse
} bind def

/dget {
    3 1 roll
    2 copy
    known {
        get exch pop
    } {
        pop pop
    } ifelse
} bind def

/test.end {
    ( ) print
    test.count 0 gt {
        (Passed ) print
        test.pass (...) cvs print
        (/) print
        test.count (...) cvs print
        ( \() print
        test.pass 100 mul test.count idiv (...) cvs print
        (%\)) print
        (\r\n) print
    } if
} bind def


% end included library code

/digitcountvalue {
    0 dict begin
    /a exch def
    /c 0 dict def
    a {
        /n exch def
        c n c n 0 dget 1 add put
    } forall
    true
    0 1 a length 1 sub {
        /ix exch def
        a ix get c ix 0 dget ne {
            pop false
            exit
        } if
    } for
    end
} bind def

(digitcountvalue) test.start
[1 2 1 0] digitcountvalue test
[0 3 0] digitcountvalue not test
test.end